lance



April 4, 1950 B. w. LANCE 23,216

MICROMETER LAP AND GUIDE V Original Filed May 29, 1946 2 Sheets-Sheet 1 FIG. 6.

IN VEN TOR.

BEN W. LANCE,

ATTD R NEYB April 4, 1950 B. w. LANCE MICROMETER LAP AND GUIDE 2 Sheets-Sheet 2 Original Filed May 29, 1946 INVENTOR.

BEN W. LANCE,

ATTD RNEYB Reissued Apr. 4, 1950 1 23,216 lMICROMETEB- LAPTANDUGUIDE 'Ben W. Iiance, Genevafl'll.

-riginal No. 2,418,413, datcd'April 1, 1947; Serial -No...673,-044,= Mayv29, 1946. Application for reissue'March 26,1948, SeriaLNo. v17,161

'- 4 'Claims. (Cl."5-1 241) .Matter'enclosed in-.hcavyxbrackets1L appears in the original patei-itibuttforms noz-partiofi-this .reissuespecification; matter printed in-vitalicsindicates theadditionssmaderby reissue This invention relates to a micrometer lap and guide fornlapping :worntspindle and anvil endspand turning onewith the. other.

:Anlobject: of this invention is tolprovideadevice that will lap micrometers of various sizes in an effi'cientumanner.

Another object of therinvention is-to provide a device that is simpleuinloperation and construction, durable in use and can =-be v inexpensively manufactured.

iWith the :above: and :other objects and. advantagesin View;theuinventionwconsists of the novel details of construction, arrangement and combination rot gparts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is an elevational View of an embodiment of the invention in the-process of lapping the anvil of a micrometer;

Figure 2 is an elevational'view of the invention in the process of lapping the spindle;

.Figure 3 is a modified form. of the invention;

Figure 4 is an elevational view of theilapftor spindleland anvil;

l'Figure'B is an end view thereof;

1 Figure 6 isan elevational viewoi an elongated double flange spindle;

'Figure'l'is an elevational view of thelap'for the modification shown in Figure 3;

Figure Sis a sectional view .oflthe spindle;

'Figure"9 isan end view thereof;

Figure 10 isa "sectional view of an elongated spindle connected to alshort spindle;

Figurell? is a'plan view ofithe spindleflange guide;

Figure 12 is a sectional view on'the 1ine'I2-l2 of Figure 11;

Figure 13 is a sectional view on the line l3-l3 of Figure 11, and

Figure 14 is an elevational view of a flange clamp.

Referring more in detail to the drawings, the reference numeral designates a conventional micrometer which includes the spindle 22 and anvil 2E.

Mounted on the spindle 22 is the spindle flange guide 26 which is [accomplished by means of the] formed with a body member with a cylindrical element and a hub with a radially disposed elongated slot 28 extended longitudinally through the cylindrical element and hub and the locking pin 38 having the tapered end or tongue 32 is mounted transversely of the slot Ill and is adjusted by means of the Allen screw 3 mounted ln the flange guide 26 rotating in the seat 38 in the pin ac. "Theslot has an inwardly tapered end which-coacts=with the tapered end 32- df the pin fil to firiiilyiiix the spindle inpo'sition. 'The guide ha's 'a 1 polished face 42* which 'is adapted to engage one of the polished faces 44 of-the elongated "flange guide lfi-" which comprises the ro'dlike bodyMB, having the circular 'flangesllifl rat each-end thereon-sand the faces 44 have central threaded bores 52 uto 1recive thehllen. screws 55 whereby the face 4|l of the guide 16 is engaged with and secured tol by means' of"the threaded bores fill in' which the' screws '54i are receivedg the polished" faces 58 6f "the short flange g-uide 60i Guide="8ll -is similar -to guide lfi -except that Lthe rodlike body 6 2 15 I foreshorte-ne'd; otherwise the circular'fla'n'ges ara-6f the same con'i-ormation as the flanges lifl.

In use as shown inTigure" 1;" the' guidei 26 is secured to'fithe spindle 22 and the guideis secured thereto 'by' the iiila'nge clamps fih there being *one --on -'ea'chside= of theflan'gesf then the guide- 66 is-isecuredtotthe-gu-ide 46 by the screws 54. 'lihe spindle is then'rotated until -the lap sll is in position lapithe anvil fi. vThei-lap ifill' is recessedi at 1 0 ts: receive 1 the rough abrasive and recessed at' 'l2 t0 receive'ithe smooth abrasive and the .surtaces' lfi -zareused toeapply oil to the anvil.

"In Figure 2 the spindle 22 ihas 'been removed fors lapping ;by T the 1 :lap 6'8 ":an'drin l igure 3 f the. small micrometer =il8has'ithe guide 26 attached to the spin'dleisfi andtthe 'anvil- 82 \ls lapped by the circular 1ap 84.

l Adjustment of the spindle will determine the clearance between' th'eilapiand anvil for .the use of rough orifinei abrasivepandtheipolished "faces will provide true faces for the spindle and anvil,

It is believed that from the foregoing description, the operation and construction of the invention will be apparent to those skilled in the art, and it is to be understood that changes in the details of construction, arrangement and combination of parts may be resorted to, provided they fall within the spirit of the invention, and the scope of the appended claims.

Having thus described the invention, what is claimed as new and described to be secured by Letters Patent is:

[1. A set of the character described for lapping the spindle and anvil of a micrometer comprising flange guide means, an elongated slot in said means for securing said means to the spindle of the micrometer, means mounted transversely of said slot for retaining said spindle therein, and means connected to said guide means for supsame porting in close proximity to the anvil of the micrometer a. lapping tool.]

[2. The invention as in claim 1 wherein the means connected to said guide means comprises a second guide means, having a. rodlike body and circular flanges having polished faces on the opposite ends thereof] [3. The invention as in claim 1 wherein said lapping tool is recessed for the reception of abrasives, and provided with smooth surfaces on the opposite sides of the recesses for the reception of oil to be used in conjunction with said abrasive.]

4. A set of the character described for lapping the spindle and anvil of a micrometer comprising flanged guide means, an elongated slot in said means for securing said means to the spindle of the micrometer, means mounted transversely of said slot for retaining said spindle therein, a second guide means, having a rod like body and circular flanges having polished faces on the opposite ends thereof, and means connected to said second guide means for supporting in close proximity to the anvil of the micrometer a lapping tool.

5. A set of the character described for lapping the spindle and anvil of a micrometer comprising flanged guide means, an elongated slot in said means for securing said means to the spindle of the micrometer, means mounted transversely of said slot for retaining said spindle therein, means connected to said guide means for supporting in close proximity to the anvil of the micrometer a lapping tool, said lapping tool being recessed for the reception of abrasives, and provided with smooth surfaces on the opposite sides of the recesses for the reception of oil to be used in conjunction with said abrasive.

6. A lapping tool for a micrometer having a handle with a U-shaped arm and having a spindle in the handle and an anvil in the outer end of the arm with the anvil aligned with the spindle, said tool comprising a hub with a centrally disposed spindle receiving bore and having an extended circular flange on the outer end, means in the hub securing the tool on the spindle with the outer face of the flange perpendicular to the axis of the spindle, a lapping sleeve having extended circular flanges at the ends, with the faces of the flanges perpendicular to the axis of the sleeve, a clamp for securing the spacing sleeve to the extended circular flange having the hub with the centrally disposed spindle receiving bore and with the axis of the sleeve aligned with the axis of the hub, spindle, and anvil, and a lapping element having parallel faces slidably actuated 4 between the outer face of the flange of the spacing sleeve and face of the anvil.

7. In a micrometer lap guide, the combination which comprises a body member including a cylindrical element having a lap engaging face and a hub extended from the side thereof opposite to the side providing the lap engaging face, said body member having a iongitud'inally disposed radially positioned micrometer spindle receiving slot extended inwardly from one side through the center thereof and extended through the cylindrical element and hub and said opening having angularly disposed 'flat spindle engaging surfaces in the inner ends, said body member also having a radially disposed pin receiving opening extended perpendicularly to the said slot and positioned with part of said opening in the said cylindrical element and the remainder thereof in the hub, 11 pin positioned in the pin receiving opening and having a spindle engaging tongue extended from the inner end and on one side thereof, said pin also having a notch in one side and spaced from the outer end, and an adjusting screw threaded in an opening in the hub parallel to the said pin receiving opening and having a head with one side of the head extended into the slot in the pin for adjusting the position of the pin whereby the pin coacts with the said angularly disposed flat surfaces in the inner end of the spindle receiving opening of the body member to clamp the lap guide on a spindle of a micrometer with the lap engaging space thereof perpendicular to the axis of the spindle.

BEN W. LANCE.

REFERENCES CITED The following references are of record in the file of this patent:

' UNITED STATES PATENTS Number Name Date 975,329 Collins Nov. 8, 1910 1,221,556 McEachron Apr. 3, 1917 1,239,494 Lange Sept. 11, 1917 1,951,201 Oakley Mar. 13, 1934 2,151,528 Preston Mar. 21, 1939 2,431,598 Wilcox et a1. Nov. 25, 1947 OTHER REFERENCES Machinery," October 1923, page 146, published by the Industrial Press, 148 Lafayette St., New York 13, New York.

Machinery, June 1924, page 802, published by the Industrial Press, 148 Lafayette St, New York 13, New York. 1 

